feat(content): hidden test cases

backend/data/questions/powx-n.yaml

@@ -9,6 +9,28 @@ categories:
 patterns:
   - binary-search
 
+function_signature: "def my_pow(x: float, n: int) -> float:"
+
+test_cases:
+  visible:
+    - input: { x: 2.0, n: 10 }
+      expected: 1024.0
+    - input: { x: 2.1, n: 3 }
+      expected: 9.261
+    - input: { x: 2.0, n: -2 }
+      expected: 0.25
+  hidden:
+    - input: { x: 1.0, n: 0 }
+      expected: 1.0
+    - input: { x: 5.0, n: 0 }
+      expected: 1.0
+    - input: { x: 2.0, n: 1 }
+      expected: 2.0
+    - input: { x: 2.0, n: -1 }
+      expected: 0.5
+    - input: { x: 0.5, n: 2 }
+      expected: 0.25
+
 description: |
   Implement `pow(x, n)`, which calculates `x` raised to the power `n` (i.e., x<sup>n</sup>).